summaryrefslogtreecommitdiff
path: root/src/mem/cache/prefetch/stride.hh
diff options
context:
space:
mode:
Diffstat (limited to 'src/mem/cache/prefetch/stride.hh')
-rw-r--r--src/mem/cache/prefetch/stride.hh31
1 files changed, 26 insertions, 5 deletions
diff --git a/src/mem/cache/prefetch/stride.hh b/src/mem/cache/prefetch/stride.hh
index 7d8f12110..2798c823f 100644
--- a/src/mem/cache/prefetch/stride.hh
+++ b/src/mem/cache/prefetch/stride.hh
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2012-2013 ARM Limited
+ * Copyright (c) 2012-2013, 2015 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
@@ -48,14 +48,13 @@
#ifndef __MEM_CACHE_PREFETCH_STRIDE_HH__
#define __MEM_CACHE_PREFETCH_STRIDE_HH__
+#include "base/hashmap.hh"
#include "mem/cache/prefetch/queued.hh"
#include "params/StridePrefetcher.hh"
class StridePrefetcher : public QueuedPrefetcher
{
protected:
- static const int maxContexts = 64;
-
const int maxConf;
const int threshConf;
const int minConf;
@@ -81,7 +80,30 @@ class StridePrefetcher : public QueuedPrefetcher
int confidence;
};
- StrideEntry **pcTable[maxContexts];
+ class PCTable
+ {
+ public:
+ PCTable(int assoc, int sets, const std::string name) :
+ pcTableAssoc(assoc), pcTableSets(sets), _name(name) {}
+ StrideEntry** operator[] (int context) {
+ auto it = entries.find(context);
+ if (it != entries.end())
+ return it->second;
+
+ return allocateNewContext(context);
+ }
+
+ ~PCTable();
+ private:
+ const std::string name() {return _name; }
+ const int pcTableAssoc;
+ const int pcTableSets;
+ const std::string _name;
+ m5::hash_map<int, StrideEntry**> entries;
+
+ StrideEntry** allocateNewContext(int context);
+ };
+ PCTable pcTable;
bool pcTableHit(Addr pc, bool is_secure, int master_id, StrideEntry* &entry);
StrideEntry* pcTableVictim(Addr pc, int master_id);
@@ -90,7 +112,6 @@ class StridePrefetcher : public QueuedPrefetcher
public:
StridePrefetcher(const StridePrefetcherParams *p);
- ~StridePrefetcher();
void calculatePrefetch(const PacketPtr &pkt, std::vector<Addr> &addresses);
};